All-solid-state battery

Abstract

An all-solid-state battery including a first electrode includes a first electrode current collector including a first electrode tab protruding to one side in a first direction, a second electrode having an opposite pole to a pole of the first electrode, stacked on the first electrode in a second direction intersecting the first direction, and including a second electrode current collector including a second electrode tab protruding to an opposite side in the first direction, a solid electrolyte provided between the first electrode and the second electrode, and an edge member extending along a circumference of the first electrode, and supporting the solid electrolyte. One end portion of the solid electrolyte, which faces the opposite side in the first direction, protrudes to the opposite side of the edge member in the first direction to support the second electrode tab.

What is claimed is: 
     
         1 . An all-solid-state battery comprising:
 a first electrode including a first electrode current collector including a first electrode tab protruding to one side in a first direction;   a second electrode having an opposite pole to a pole of the first electrode, stacked on the first electrode in a second direction intersecting the first direction, and including a second electrode current collector including a second electrode tab protruding to an opposite side in the first direction;   a solid electrolyte provided between the first electrode and the second electrode; and   an edge member extending along a circumference of the first electrode, and supporting the solid electrolyte,   wherein one end portion of the solid electrolyte, which faces the opposite side in the first direction, protrudes to the opposite side of the edge member in the first direction to support the second electrode tab.   
     
     
         2 . The all-solid-state battery of  claim 1 , wherein the opposite end portion of the solid electrolyte, which faces the one side in the first direction, protrudes to one side of the first electrode in the first direction to support the first electrode tab. 
     
     
         3 . The all-solid-state battery of  claim 1 ,
 wherein the edge member includes an edge hole formed on the one side of the first electrode in the first direction, and   wherein the opposite end portion of the solid electrolyte, which faces to the one side in the first direction, is located in the edge hole.   
     
     
         4 . The all-solid-state battery of  claim 1 ,
 wherein the first electrode further includes a first electrode active material formed in the first electrode current collector, and   wherein the second electrode further includes a second electrode active material formed in the second electrode current collector,   wherein an area of the second electrode active material, which is formed in the second electrode current collector, is greater than an area of the first electrode active material, which is formed in the first electrode current collector.   
     
     
         5 . The all-solid-state battery of  claim 4 , wherein one end portion of the second electrode active material, which faces the opposite end portion in the first direction, corresponds to the one end portion of the solid electrolyte. 
     
     
         6 . The all-solid-state battery of  claim 4 , wherein the opposite end portion of the solid electrolyte, which faces the one side in the first direction, protrudes to the one side of the first electrode active material in the first direction. 
     
     
         7 . The all-solid-state battery of  claim 4 , wherein the edge member supports the second electrode active material which is formed on the second electrode current collector disposed at an external side of the first electrode active material formed on the first electrode current collector, at an outside of the first electrode. 
     
     
         8 . The all-solid-state battery of  claim 1 , wherein a length (L), by which the one end portion of the solid electrolyte protrudes to the opposite side of the edge member in the first direction, is equal to or greater than 1.5 times a height (H) of the edge member in the second direction. 
     
     
         9 . The all-solid-state battery of  claim 2 , wherein a length (D), by which the opposite end portion of the solid electrolyte protrudes to the one side of the first electrode in the first direction, is equal to or greater than 1.5 times a height difference (G) of the opposite end portion of the solid electrolyte and the second electrode current collector in the second direction. 
     
     
         10 . The all-solid-state battery of  claim 1 ,
 wherein the second electrode is in pair and the pair of second electrodes are provided to extend in parallel to each other while the first electrode being interposed between the pair of second electrodes,   wherein a pair of solid electrolytes are provided to be disposed between the pair of second electrodes and the first electrode, respectively, and   wherein the edge member is disposed between the pair of solid electrolytes.   
     
     
         11 . The all-solid-state battery of  claim 10 , wherein the solid electrolytes are coated on the second electrode active material of each of the pair of second electrodes. 
     
     
         12 . The all-solid-state battery of  claim 1 ,
 wherein the first electrode includes a positive electrode, and   wherein the second electrode includes a negative electrode.